CN111831109A

CN111831109A - Electronic device, stop determination method, and storage medium

Info

Publication number: CN111831109A
Application number: CN202010272043.0A
Authority: CN
Inventors: 今村圭一
Original assignee: Casio Computer Co Ltd
Current assignee: Casio Computer Co Ltd
Priority date: 2019-04-18
Filing date: 2020-04-08
Publication date: 2020-10-27
Also published as: JP2022089943A; JP2020176929A; US11525928B2; JP7070495B2; US20230067390A1; JP7380746B2; US20200333473A1

Abstract

The invention provides an electronic device, a stop determination method and a storage medium. Provided is an electronic device capable of appropriately determining whether a user is moving or stopped. The electronic device is provided with: a speed acquisition unit for acquiring a moving speed of a user; and a processor for determining whether the user is in a moving state or a stopped state. The processor determines that the moving state transits to the stopped state from the moving state when the moving speed acquired by the speed acquisition unit is less than the stop speed threshold in the moving state, and determines that the moving state transits to the moving state from the stopped state when the moving speed acquired by the speed acquisition unit is equal to or more than the stop speed threshold in the stop state.

Description

Electronic device, stop determination method, and storage medium

Reference to related applications

The present application claims priority based on application No. 2019-079685 of japanese patent application No. 2019, 4, 18, and the contents of the basic application are all incorporated into the present application.

Technical Field

The technical field relates to an electronic device, a stop determination method, and a storage medium.

Background

For example, Japanese patent application laid-open No. Hei 11-258324 discloses the following structure: in order to prevent the moving speed from being 0km/h in measurement due to an error in positioning or the like even if the user is not moving, a value larger than 0km/h is set as a threshold value for being regarded as stopped.

Disclosure of Invention

The present embodiment includes: a speed acquisition unit for acquiring a moving speed of a user; and a processor that determines whether the user is in a moving state or a stopped state, wherein in the moving state, the processor counts a number of times that the moving speed acquired by the speed acquisition unit is less than a stop speed threshold, determines that the user is in the moving state to transition to the stopped state when the number of times that the moving speed is less than the stop speed threshold reaches a stop determination value, and in the stopped state, the processor counts a number of times that the moving speed acquired by the speed acquisition unit is equal to or greater than a moving speed threshold, determines that the user is in the stopped state to transition to the moving state when the number of times that the moving speed is equal to or greater than the moving speed threshold reaches a movement determination value, the stop determination value being a value different from the movement determination value.

Drawings

Fig. 1 is a block diagram showing a configuration of an electronic device according to the present embodiment.

Fig. 2 is a flowchart showing the procedure of the stop determination method according to embodiment 1.

Fig. 3 is a flowchart showing the steps of the movement determination method according to embodiment 1.

Fig. 4 is a graph showing changes in the movement speed of the user acquired by the speed acquiring unit of the electronic device according to the present embodiment.

Fig. 5 is a flowchart showing the procedure of the stop determination method according to embodiment 2.

Fig. 6 is a flowchart showing the procedure of the movement determination method according to embodiment 2.

Fig. 7 is a flowchart showing the procedure of the stop determination method according to embodiment 3.

Fig. 8 is a flowchart showing the procedure of the movement determination method according to embodiment 3.

Detailed Description

The embodiments are described in detail below with reference to the drawings. The following embodiments are illustrative of an electronic device, a stop determination method, and a stop determination program for embodying the technical idea of the present embodiment, and the present invention is not limited to the following description. In the following description, the same or similar members and steps are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

[ electronic device ]

The configuration of an electronic device according to the present embodiment will be described with reference to fig. 1. Fig. 1 is a block diagram showing a configuration of an electronic device according to the present embodiment. The electronic device according to the present embodiment is a portable information terminal such as a smartphone or a wearable terminal, and is, for example, a smart watch having a travel record (record of travel distance, travel speed, movement trajectory, movement time, and the like) function.

The electronic device 10 includes a control unit 1, a speed acquisition unit 20 having a positioning unit 2 for performing GNSS positioning, a storage unit 4, an operation unit 5, and a display unit 6, and a touch panel is configured by a part of the operation unit 5 and the display unit 6.

The control Unit 1 is a CPU (Central Processing Unit) and executes a program stored in the storage Unit 4 to control the speed acquisition Unit 20 and the display Unit 6. Further, the control unit 1 determines whether the user is currently in a moving (e.g., traveling) state (moving state) or a stopped state (stopped state) based on the moving speed calculated by the speed acquisition unit 20, as will be described later.

The speed acquisition unit 20 includes a positioning unit 2 and a moving speed calculation unit 3. The positioning unit 2 acquires the current location of the electronic device 10 based on the signal received from the positioning satellite ST. The moving speed calculation unit 3 calculates the moving speed of the electronic device 10 from the temporal change at the current location. The positioning unit 2 is a GNSS receiver module, and includes an antenna 21, an RF (radio frequency) unit 22, a baseband conversion unit 23, a capture tracking unit 24, a control unit 25, and a storage unit 26. The moving speed calculating unit 3 may be provided as a part of the CPU constituting the control unit 25 or the control unit 1. In the speed acquisition unit 20, the control unit 1 acquires information on the current location of the vehicle from the positioning unit 2 every predetermined unit time t (every predetermined time interval), and the travel speed calculation unit 3 calculates the travel speed.

The RF unit 22 includes an LNA (Low Noise Amplifier), a BPF (Band-Pass Filter), a local oscillator, a mixer, and the like, receives satellite radio waves in the L1 Band (1.57542 GHz in GPS satellites), selectively passes and amplifies signals from the positioning satellites ST, and converts the signals into intermediate frequency signals (IF). The baseband converter 23 obtains a baseband signal (code string of a navigation message) by applying a Clear and Acquisition (C/a) code of each positioning satellite to the intermediate frequency signal obtained by the RF unit 22. The acquisition and tracking unit 24 calculates correlation values between the intermediate frequency signal obtained by the RF unit 22 and the C/a code at each phase of each positioning satellite, and identifies the peak value thereof, thereby identifying the received signal from the positioning satellite ST and the phase thereof. The acquisition and tracking unit 24 feeds back phase information to the baseband conversion unit 23 so as to continuously acquire a code sequence related to a navigation message from the positioning satellite ST by using the C/a code of the positioning satellite ST and the phase thereof.

The control unit 25 is a CPU, and controls the RF unit 22 and the baseband conversion unit 23 in accordance with a control signal and setting data input from the control unit 1 (host CPU). The storage unit 26 provides the control unit 25 with a memory area for work, and stores various setting data related to positioning and a history of positioning. Specifically, the storage unit 26 stores orbit information (ephemeris), predicted orbit information (almanac), a program for performing positioning, a previous positioning date and time, a position, and the like of each positioning satellite.

The storage unit 4 is a flash memory or a RAM, and stores programs for realizing the function as an electronic clock and the travel recording function of the electronic device 10, programs for controlling the positioning unit 2 and the moving speed calculating unit 3, data necessary for executing these programs, and the like. The storage unit 4 also stores a program for the control unit 1 to determine whether the user is in a moving state or a stopped state, data necessary for executing the program, and the like.

The operation unit 5 is provided for the user to operate with his/her hand, and is a touch panel (not shown) including 1 to a plurality of knobs, buttons, and a display unit 6 provided on the outer periphery of the main body (portion other than the wristband for the user) of the electronic device 10.

The display unit 6 is a liquid crystal display or an organic EL display provided in a dial portion of the watch, and displays information based on characters and images. The display unit 6 includes a monochrome display 61 having a function of displaying a monochrome image and a color display 62 having a function of displaying a color image, and has a two-layer structure in which the monochrome display 61 is disposed on the front side and the color display 62 is disposed on the inner side, for example. The display contents, and the monochrome image and the color image can be switched by the operation of the operation section 5. In order to save power, the display unit 6 is configured to switch to display or non-display based on only the current time of the monochrome image when the operation unit 5 is not operated for a certain period of time. The electronic device 10 includes a notification unit such as a speaker or the like, and a notification unit such as an actuator-based vibrator.

The information displayed on the display unit 6 is not particularly limited, and may be, for example, the current time, the reception state of satellite radio waves, the travel time, the travel distance, the user's speed, the running time, the calorie consumption, a map, the travel trajectory, and the like, and may further display whether the user is in a travel state or a stop state. The electronic device 10 may be configured to display or notify such information by sound or vibration on the display unit 6 in real time, or may be configured to display such information on the display unit 6 by operation of the operation unit 5.

In the following embodiments, the description will be given taking the example in which the movement state is the travel state as an electronic device for a user who runs, unless otherwise stated. Therefore, for example, when the user walks at a traveling speed of about 4 to 5km/h, the user is determined to be in a stopped state. In the present specification, the travel state and the stop state refer to the results of the determination by the electronic device according to the present embodiment, and do not necessarily coincide with the actual action of the user.

[ 1 st embodiment ]

A method according to embodiment 1 for determining a state of a user wearing the electronic device 10 by the electronic device 10 will be described. The values used in the determination of the state transition are exemplified in table 1. These values are set in advance and stored in the storage unit 4.

[ TABLE 1 ]

Using a stopping speed threshold V when the user is in a travelling state_pAnd a stop determination value T_pA mobile reset value R_rAnd stop determining the standby value W_R. Further, t is a unit time for obtaining the value V of the user's moving speed. Stopping speed threshold V_pWhen the control unit 1 determines whether or not the user has transitioned from the travel state to the stop state, the value is set as an object for comparing the moving speed V of the user. In addition, the stop determination value T_pThis is the number of determinations required for the control unit 1 to determine that the state is transitioning to the stopped state. For example, when it is determined that the moving speed V of the user is higher than the stopping speed threshold V_pLow number of times to reach the stop determination value T_pWhen the state transition is made, it is determined that the state transition is made to the stopped state. In addition, the stop determination value T_pSet corresponding to the value of the unit time t. Determining that the moving speed V of the user is higher than the stopping speed threshold V_pThe number of times of low can be counted by the control unit 1 by incrementing the determination counter j, which is a counter value stored in the storage unit 4. On the other hand, the mobile reset value R_rThe determination counter j is set to 0, that is, a value set for initialization. When the moving speed V of the user is continuously judged to be the stopping speed threshold V_pReaches the moving reset value R more times_rIn the case of (3), the control unit 1 sets the determination counter j to 0. Determining that the moving speed V of the user is a stopping speed threshold V_pThe control unit 1 can count the number of times by incrementing the determination reset counter k, which is a counter value stored in the storage unit 4. In addition, the stop determination standby value W_RThis indicates the number of times the moving speed V of the user is acquired without determining the state transition. The number of times the moving speed V of the user is acquired can be counted by the control unit 1 incrementing a state counter i which is a counter value stored in the storage unit 4.

When the user is in a stop state, the moving speed threshold V is used_rAnd a movement judgment value T_rStopping resetting the value R_pAnd a movement determination standby value W_P. Threshold value V of moving speed_rThe control unit 1 determines whether or not the user has stoppedWhen the state transitions to the travel state, the value of the object is set to the value V for comparing the moving speed of the user. In addition, the movement determination value T_rThis is the number of determinations required for the control unit 1 to determine a transition to the travel state. For example, when the moving speed V of the user is determined to be the moving speed threshold V_rThe number of times reaches the movement determination value T_rWhen the vehicle is traveling, it is determined that the vehicle is in a state transition to the traveling state. In addition, the movement determination value T_rSet corresponding to the value of the unit time t. Determining that the moving speed V of the user is a moving speed threshold V_rThe control unit 1 can count the number of times by incrementing the determination counter j, which is a counter value stored in the storage unit 4. On the other hand, the stop reset value R_pThe determination counter j is set to 0, that is, a value set for initialization. When it is continuously determined that the moving speed V of the user is higher than the moving speed threshold V_rLow number of times to reach the stop reset value R_pIn the case of (3), the control unit 1 sets the determination counter j to 0. Determining that the moving speed V of the user is higher than a moving speed threshold V_rThe low count can be counted by the control unit 1 by incrementing the determination reset counter k, which is the counter value stored in the storage unit 4. In addition, the movement determination standby value W_PThis indicates the number of times the moving speed V of the user is acquired without determining the state transition. The number of times the moving speed V of the user is acquired can be counted by the control unit 1 incrementing a state counter i which is a counter value stored in the storage unit 4.

(stop determination method in traveling State)

A procedure of determining a transition from the travel state to the stop state by the electronic device 10, that is, a method of the control unit 1 performing the stop determination after determining that the state of the user is the travel state, will be described with reference to fig. 2. Fig. 2 is a flowchart showing the steps of the stop determination method according to embodiment 1 for executing stop determination in the electronic device according to the present embodiment.

When the travel state STARTs (RUN START), that is, when it is determined that the state of the user has transitioned from the stopped state to the travel state, the control unit 1 first initializes a state counter i to 0 and writes it in the storage unit 4(S11), and further, determines the stateThe counter j is initialized to 0 and written in the storage unit 4 (S12). The speed acquisition unit 20 then acquires the position information (S13), and calculates the moving speed V based on the difference between the position information and the position information acquired the previous 1 time (S14). Next, the control unit 1 writes the moving speed V as the traveling speed of the user in the storage unit 4 in association with the position information and the acquisition time (S15). Then, the control unit 1 sets the state counter i and the stop determination standby value W_RA comparison is made (S16), if i < W_R(no in S16), the state counter i is incremented and overwritten into the storage unit 4(S19), and the process returns to step S13. Until the state counter i stored in the storage section 4 reaches the stop determination standby value W_RUntil (yes at S16), the controller 1 repeatedly executes the series of processing of steps S13 to S16 and S19 every unit time t.

Control unit 1, when state counter i reaches stop determination standby value W_R(YES in S16), the process proceeds to step S22, where the moving speed V calculated in the previous step S14 and the stop speed threshold V are compared_pA comparison is made. In other words, the first (W) to transition to the current travel state_R+1) times later, determining whether the calculated moving speed V is less than the stopping speed threshold V_p. When the moving speed V is a stopping speed threshold V_pIn the above case (no in S22), control unit 1 compares decision counter j stored in storage unit 4 with 0 (S23), and returns to step S13 when j is equal to 0 (no in S23). In the present traveling state, the moving speed V is the stop speed threshold V in all of the steps S22 up to the execution of step S12, and then, quasi-all of the steps are performed_pIn the above case, j is 0. Therefore, the control section 1 stops the speed threshold V until the shortage is measured_pUntil the moving speed V is reached (yes at S22), a series of processing of steps S13 to S16, S22, and S23 is repeatedly executed.

On the other hand, when the moving speed V is less than the stop speed threshold V_p(the moving speed V crosses the stopping speed threshold V_p) In the case of (yes in S22), the control unit 1 initializes the determination reset counter k to 0 and writes it in the storage unit 4 (S27). In addition, the control unit 1 increments the determination counter j and overwrites it in the storage unit 4(S28) and a stop determination value T_pComparison is performed (S29). At j < T_pIf not (no at S29), control unit 1 returns to step S13. Therefore, the judgment counter j stored in the storage unit 4 reaches the stop judgment value T_pUntil this point (yes at S29), control unit 1 repeatedly executes the processing of steps S13 to S16 and S22, and steps S27 to S29 or step S23. On the other hand, when the determination counter j is the stop determination value T_pThe above (YES in S29), namely, the shortage of the stop speed threshold V_pIs measured to a moving speed V of_pNext, the control unit 1 determines that the state of the user has transitioned from the travel state to the stop state. That is, the travel state ENDs (RUN END) and the stop state STARTs (PAUSE START).

In addition, under the stop speed threshold V_pAfter the moving speed V of (2) is measured 1 or more times, the determination counter j stored in the storage unit 4 becomes 1 or more. Therefore, under the stop speed threshold V_pIs cumulatively measured to T_pThe stopping speed threshold V is measured before_pIf the moving speed V is higher than the predetermined moving speed V (no in S22), controller 1 determines in step S23 that determination counter j is greater than 0 (yes in S23), and proceeds to step S24. The control unit 1 increments the determination reset counter k and overwrites it in the storage unit 4(S24), and then compares it with the movement reset value R_rComparison is performed (S25). At k < R_rWhen it is determined (no at S25). The controller 1 returns to step S13 and executes a series of processes such as steps S13 to S16 and S22. On the other hand, the determination reset counter k stored in the storage unit 4 is set to the movement reset value R_rIn the above case (yes in S25), the control unit 1 initializes the determination counter j to 0 (S12) until the determination counter j reaches the stop determination value T_pA series of steps S13 to S16, S22, S23 are repeatedly performed. In addition, R is less than 1 when the reset counter k is judged to be more than 1_rIf the moving speed V measured next is less than the stop speed threshold V_p(yes in S22), control unit 1 initializes determination reset counter k to 0 and overwrites it in storage unit 4 (S27). I.e. if in succession R_rSecondary measurement to stop speed threshold V_pBefore the moving speed V is higher than the stop speed threshold V_pIs measured to a moving speed V of_pNext, the control unit 1 determines that the traveling state has transitioned to the stopped state.

(method of determining movement (stop release) in stopped state)

A procedure of determining a transition from a stopped state to a traveling state by the electronic device 10, that is, a method in which the control unit 1 determines that the state of the user is a stopped state and then performs movement determination will be described with reference to fig. 3. Fig. 3 is a flowchart showing the steps of the movement determination method according to embodiment 1 for performing movement determination in the electronic device according to the present embodiment.

As shown in fig. 3, in the stopped state, the values used for the determination are replaced as shown in table 1, and the determination of the transition from the stopped state to the traveling state is performed by the same procedure as in the traveling state shown in fig. 2. Specifically, the control unit 1 determines whether or not the moving speed V is the moving speed threshold V_rAbove (the moving speed V crosses the moving speed threshold V_r) (S32). The state counter i, the determination counter j, and the determination reset counter k are different in threshold value (S18, S39, S35). Further, in the stopped state, the control unit 1 records 0km/h as the traveling speed of the user without recording the moving speed V calculated in step S14 (S17). Further, the position information acquired in step S13 is not recorded (updated), but the position information acquired last in the traveling state before the transition to the stopped state or the position information acquired 1 st time in the stopped state is recorded. Therefore, in the stopped state, the traveling speed continues at 0km/h, and the moving trajectory is fixed. The recording timing of the travel speed and the like in step S17 may be, for example, before the position information is acquired (S13). Alternatively, the information acquired in step S13 may be recorded for each time as the positional information.

When the electronic device 10 is set to the stopped state at the time of startup (for example, a travel record start operation by a user), the moving speed V and the moving speed threshold V are set_rA comparison is made (S32) corresponding to the result transitioning to the travel state. In this case, the movement determination standby value W may not be provided_PThe moving speed V is determined from the 1 st time.

The electronic device 10 executes the steps shown in fig. 2 and 3, and the control unit 1 determines the state of the user as follows in the transition of the moving speed shown in fig. 4. Fig. 4 is a graph showing changes in the movement speed of the user acquired by the speed acquiring unit of the electronic device according to the present embodiment. A point (pt.) on the horizontal axis of fig. 4 represents a value of the moving speed obtained at the second time among the moving speeds obtained by the speed obtaining unit per unit time t. In fig. 4, the moving speed is obtained every 1 second. That is, the unit time t is 1 second. In fig. 4, point 1 is a traveling state, and 20 points or more have passed after the transition. The values used for the determination are shown in table 1.

As shown in fig. 4, the speed acquisition unit 20 shifts the moving speed calculated from the current position measured by the positioning unit 2, including the deviation. In FIG. 4, the moving speed is 8-11 km/h in the vicinity of the high speed as compared, and is reduced to about 2km/h in the vicinity of the 70 th point, reduced to about 5km/h in the vicinity of the 150 th point, and then returned to the high speed.

From the 1 st point in fig. 4, the moving speed V is obtained by the control unit 1 and the stop speed threshold V_pI.e. 5.0 km/h. Then, it is determined that the moving speed V of the user is higher than the stopping speed threshold V at the point a where the moving speed is lower than 5.0km/h_pLow, the control unit 1 increments the determination counter j. That is, the control unit 1 increments the determination counter j to compare the moving speed V determined as the user with the stop speed threshold V_pLow counts were counted. The number of times of the moving speed V obtained from the point a to the point b is determined to be more than 5.0km/h, and it is determined that the reset counter k does not reach the moving reset value R_rDetermining that the moving speed V of the user is higher than the stopping speed threshold V_pThe counting of low times will continue. Then, at point b, j becomes 10, that is, the determination counter j becomes the stop determination value T_pThat is, 10, the control unit 1 determines that the state is in the stopped state.

After the transition to the stop state, the standby value W is determined for the movement from the 1 st time_PThat is, the moving speed V acquired at the 5 th time is determined not to be the state transition but to be the moving speed V acquired from the point cAnd a dynamic speed V for judging the state transition. That is, the control unit 1 compares the moving speed V obtained at point c and later and the moving speed threshold V_rI.e. 7.0 km/h. Then, at a point d where the moving speed is 7.0km/h or more, it is determined that the moving speed V of the user is the moving speed threshold V_rAs described above, the control unit 1 increments the determination counter j. That is, the control unit 1 increments the determination counter j to set the movement speed V determined as the user to the movement speed threshold V_rThe above number of times is counted. However, at the point e where it is determined that the moving speed V is less than 7.0km/h 2 times in succession, the reset counter k is determined to have reached the stop reset value R_pAnd therefore the decision counter j is initialized. That is, at point e, the determination counter j becomes 0. Then, at point f when the moving speed becomes 7.0km/h or more again, the counting of the determination counter j is restarted. Then at the point g, j becomes 5, that is, the decision counter j becomes the movement decision value T_rThe control unit 1 determines that the vehicle is in the traveling state.

After the transition to the traveling state, the standby value W is determined for the time from 1 st time to stop_RThat is, the state transition determination is not performed for the moving speed V acquired at the 20 th time, and the state transition determination is performed for the moving speed V acquired from the point h. That is, the moving speed V obtained after h is set to the stop speed threshold V by the control unit 1 in the same manner as described above_pI.e. 5.0 km/h. Further, when the moving speed V is less than 5.0km/h at point l and the control unit 1 starts counting the judgment counter j, the moving speed less than 5.0km/h is accumulated 3 times after point 1, and therefore the judgment counter j does not reach the stop judgment value T_pI.e. 10. Then, since the moving speed is maintained at 5.0km/h or more, at the point m, k becomes 3, that is, the determination reset counter k becomes the moving reset value R_rThat is, 3, the determination counter j is initialized, and the travel state is continued without transition to the stop state. Therefore, in fig. 4, the control unit 1 determines that the vehicle is in the stopped state (PAUSE) between b and g, and the vehicle is in the traveling state except for this.

As shown in Table 1, stop speed threshold V_pSet to a value greater than 0 km/h. In addition, the moving speed threshold V_rPreferably set to the stopping speed threshold V_pAbove, it is more preferable that the specific stop speed threshold V is_pIs large. By setting to V_p＜V_rEven if the moving speed V is large to some extent due to the measurement error of the positioning unit 2 when the user stops, it is difficult to determine that the state is shifted to the traveling state. Further, it is difficult to determine that the user has transitioned to the stopped state even if the user continues to move without stopping when the user's progress pitch decreases. But if stopping speed threshold V_pToo small, otherwise moving speed threshold V_rIf the value is too large, the sensitivity of determination of the state transition may be lowered, and the determination of the state transition may be delayed, and the state may not transition. In addition, if the speed threshold V is stopped_pAnd a moving speed threshold V_rDifference of difference (V)_r-V_p) If the magnitude is too large, V may be continuously obtained depending on the traveling or walking speed of the user_p≤V＜V_rA moving speed V in the range of (1). At this time, since the control unit 1 does not determine the state transition in either of the traveling state and the stopped state, even if the traveling speed V is the same, the traveling speed is recorded when the traveling state is decelerated, and the stopped state is not recorded when the traveling state is accelerated. Therefore, in order to uniquely determine the state with respect to the moving speed of the user, it is preferable to set the stop speed threshold V_pAnd a moving speed threshold V_rThe difference is reduced, and specifically, the range of variation of the movement speed during the travel of the user is set to be small.

Alternatively, the stop speed threshold V can also be set_pAnd a moving speed threshold V_rThe difference is set to be larger than the fluctuation range of the moving speed of the user during the traveling. With such setting, in the traveling state, when the traveling speed V decreases, the traveling speed V is larger than the traveling speed threshold V_rSmall but stop speed threshold V_pAbove (V)_p≤V＜V_r) Then, it is assumed that the user has a possibility of continuing running even if the pace decreases, and the recording is continued by walking the moving speed V to the traveling speed. In contrast, after the transition to the stopped state, even if the user starts low-speed traveling or walking, the moving speed V becomes the stop speed threshold V_pAbove, if the moving speed is insufficientDegree threshold V_r(V_p≤V＜V_r) It is estimated that the user simply moves by walking after running, and does not transit to the traveling state. Further, the movement determination value T is used_rSet to be small, if the user accelerates and the moving speed V becomes the moving speed threshold V_rThe transition to the traveling state is made in a short time, and therefore the transition to the traveling state is not too slow.

Speed threshold V_p、V_rPreferably, the movement speed is set based on the traveling speed of the user. I.e. the moving speed threshold V_rIt is preferable to set the speed range near the lower limit of a stable (long-lasting) speed range during traveling by the user, for example, to be 1km/h smaller than the lower limit of the speed range. And, stopping the speed threshold V_pSet to the set moving speed threshold value V_rThe following values. Preferably, the stop speed threshold V is set to be more susceptible to the measurement error of the positioning unit 2_pThe larger the setting. For example, in FIG. 2, the moving speed threshold V is shifted in a range of about 8km/h to 9.5 km/h to 10km/h except for a part of the moving speed during the traveling of the user_rThe lower limit of the number of the particles was set to 7.0km/h which was 1km/h smaller than the lower limit of 8 km/h. In the present embodiment, the stop speed threshold V is set as described above_pIs made to be in contact with a moving speed threshold value V_rThe difference (f) is larger than the variation range of the moving speed of the user during the traveling (the range of about 8km/h to 9.5-10 km/h). Here, the speed threshold V will be stopped_pSet relative to a moving speed threshold value V_r2.0km/h less than 5.0 km/h. With such setting, as described above, even if the user's pace decreases, V continues to be acquired_p≤V＜V_rThe moving speed V in the range of (b) can be hardly determined to be in the stopped state, and the recording can be continued with the moving speed V as the traveling speed.

Speed threshold V_p、V_rFor example, a pattern of several stages corresponding to the specification of running for beginners (jogging), running for athletes, cross country running, etc. is stored in the storage unit 4, the pattern is switched by the operation of the user from the operation unit 5,to make the setting. In the present embodiment, the moving state is the traveling state, but the present invention is not limited to this. For example, the moving state may include a walking state, a traveling state by a bicycle, and the like. In this case, the speed threshold V_p、V_rA mode corresponding to the moving speed in walking, riding, or the like may be further set. In addition, the speed threshold V_p、V_rThe time of activation or the like may be set based on the actual results of the previous use of the user of the electronic device 10.

Movement determination value T_rPriority setting ratio stop determination value T_pIs small. Stop determination value T_pThe larger the travel state, the more difficult it is to determine that the vehicle has transitioned to the stopped state, even if the travel speed V becomes less than the stop speed threshold V due to a decrease in the user's travel pace or the like_p. In addition, the movement determination value T_rThe larger the measurement error, the more difficult it is to determine that the vehicle has transitioned to the traveling state in the stopped state, even if the traveling speed V becomes the traveling speed threshold V due to the measurement error_rThe above. Therefore, if the value T is determined_p、T_rIf the measurement error is small, the influence of the measurement error is large, and the state transition is likely to be erroneously determined. On the other hand, the determination value T_p、T_rThe larger the state transition, the lower the sensitivity of the determination of the state transition. For this purpose, by setting to T_p＞T_rThe transition from the traveling state to the stopped state is more difficult to determine than the transition from the stopped state to the traveling state. As a result, it is possible to prevent the electronic apparatus 10 from determining that the state is stopped and not recording the moving speed V, the moving trajectory, or the like even if the user is actually traveling. Preferably, the longer the unit time T is, the more the determination value T is determined_p、T_rThe smaller the setting. If the unit time T is long and the value T is determined_p、T_rIf the value is too large, it takes time to determine the state transition, the determination of the state transition is delayed, and the state does not transition in some cases. In addition, it is difficult to notify the user of the current traveling state or stopped state in real time. On the other hand, if the unit time T is short and the determination value T is set_p、T_rIf small, the control unit 1 determines the moving speed V by the moving speed V acquired in a short timeThe state transition is fixed, and thus the state transition is liable to be erroneously performed. Due to the fact that the value T is being determined_p、T_rWhen the setting is small, the influence of the measurement error tends to be large, and therefore, it is preferable to adjust the measurement error in a manner that balances the degree of response with the time required for notifying the user of the information. With respect to the determination value T_p、T_rOr, alternatively, with a speed threshold V_p、V_rSimilarly, several stages can be set according to the user.

The unit time t is not particularly limited, but is preferably in the range of 1 second to 5 seconds. As the unit time t becomes shorter, the number of times (number of points) per time for obtaining the moving speed V (S14) for determining the state transition increases, and therefore, the influence of the measurement error of the positioning unit 2 decreases and the determination accuracy increases, but the power consumption of the electronic device 10 increases. The unit time t may be set to a mode of several stages and switched by the user.

Since the traveling speed V obtained immediately after the transition to the traveling state may not be stable, the stop determination waiting value W is set so that the comparison of the traveling speeds V is not executed (S22) and the transition to the stop state is not erroneously performed_R. Similarly, the movement determination standby value W_PThe setting is such that the comparison (S32) of the moving speed V obtained immediately after the transition to the stopped state is not executed. That is, the standby value W is determined_R、W_PIt is set so as not to unnecessarily repeat the state transition. Movement determination standby value W_PPreferably, the value is not set to the stop determination standby value W_RThat is large. In this case, in order to prevent the user from actually resuming the travel in the stopped state, the user does not transit to the travel state, and the measured moving speed V is not recorded. In addition, the standby value W is determined_R、W_PCan be compared with a decision value T_p、T_rSimilarly, the unit time t is set. Alternatively, the determination standby value W may not be set_R、W_PThe moving speed V may be determined from the 1 st time, or only the stop determination waiting value W may be set_R. In this case, the processing related to the state counter i is not required (S11, S16, S18, S19).

Preferably, the mobile reset value R_rSet odds ratio stop determination value T_pSmall, stop reset value R_pSet specific movement determination value T_rSmall, and set to 2 or more, respectively. Thereby, the influence of measurement errors can be reduced. In addition, at the reset value R_r、R _p1, the speed threshold V is continuously crossed only at the moving speed V_p、V_rIf (yes at S22, yes at S32), the control unit 1 determines that the state is in transition. Therefore, the speed threshold V can be configured not to be crossed by the moving speed V_p、V_rIf the determination counter j is not 0 (yes in S23/yes in S33), the control unit 1 initializes the determination counter j at this point in time (S12), and does not need the processing related to the determination reset counter k (S24, S25, S27/S34, S35, S37). Is set to R_r＝1、R_pIn the setting of 1, the determination value T is preferably set so that the determination of the state transition is less likely to be delayed_p、T_rAnd a small case.

In addition, the movement reset value R may not be set_rAnd stopping the reset value R_pIf the moving speed V exceeds the judgment value T during the accumulation from the start of the state_p、T_rNumber of times, speed threshold V_p、V_rThe control unit 1 determines that the state is transited. That is, in the traveling state (fig. 2), the moving speed V is the stop speed threshold V_pIn the above case (no in S22), the process returns to step S13 without executing steps S23 to S25 and S27. In the stopped state (fig. 3), the moving speed V is less than the moving speed threshold V_rIf not (no at S32), the process returns to step S13 without executing steps S33 to S35 and S37.

The stop determination value T may be set_pAnd a movement determination value T_rIs set to 1 so that if the moving speed V crosses the speed threshold V_p、V_rOnce, a state transition is made. That is, the determination value T may not be set_p、T_rIf the moving speed V exceeds the speed threshold V_p、V_r(yes at S22/yes at S32), control unit 1 determines that the state transition is performed at this point in time, and cannot perform the state transitionProcessing relating to the determination counter j is required (S12, S28, S29/S38, S39). In this case, too, the reset value R is not required_r、R_pAnd determining the reset counter k. By performing the setting in this manner, the state transition can be determined early with a simple procedure. In order that the control unit 1 can determine that the state transition has been made in a short time in accordance with the moving speed of the user, particularly, the transition from the stopped state to the traveling state can be determined by such a procedure.

For example, japanese patent application laid-open No. h 11-258324 discloses a configuration in which a speed value greater than 0 is set as a threshold for stopping. If the threshold value set at this time is too high, the measured moving speed may not exceed the threshold value even if the user is moving, and the user may be regarded as being stopped. If the threshold value is too low, the user may detect a moving speed exceeding the threshold value even when the user stops due to a measurement error of the speed, and the user may be instantaneously considered as moving. As a result, it is difficult to accurately determine the state transition between the moving state and the stopped state.

However, according to embodiment 1, the stop speed threshold for determining the transition from the travel state to the stop state and the movement speed threshold for determining the transition from the stop state to the travel state are individually set, and therefore erroneous determination is difficult. Further, by determining that the state transition is performed when the moving speed exceeds the speed threshold value by the specific number of times in the traveling state and the stopped state, erroneous determination and missing determination can be further suppressed. Further, by recording the travel speed in the travel-only state as the travel speed, the user can know the actual travel speed at the time of travel.

[ 2 nd embodiment ]

The larger the error in the position information is, the larger the moving speed is easily calculated, and particularly in the determination of the transition from the traveling state to the stopped state, the larger the obtained moving speed is due to the measurement error, the stop speed threshold value is not made insufficient, and the state transition is difficult to be determined. The error in the position information obtained by the signals from the positioning satellites is mainly due to the low signal quality. Therefore, by changing the threshold value for determining the state transition based on the signal quality, the accuracy of the determination can be further improved. The determination method according to embodiment 2 of the present invention will be described below with reference to fig. 1, 5, and 6. Fig. 5 is a flowchart showing the steps of the stop determination method according to embodiment 2 for executing stop determination in the electronic device according to the present embodiment. Fig. 6 is a flowchart showing the steps of the movement determination method according to embodiment 2 for performing movement determination in the electronic device according to the present embodiment.

The stop determination method according to the present embodiment can be executed by the electronic device 10 shown in fig. 1, as in embodiment 1. However, in the present embodiment, the positioning unit 2 also obtains the signal quality from the positioning satellite ST. The signal quality is CNR (C/N, carrier-to-noise ratio) and SNR (S/N, signal-to-noise ratio), and is determined based on a part or all of the indices obtained by the acquisition tracker 24, the controller 25, and the controller 1, although it depends on the design. CNR is used here.

Further, the control unit 1 calculates the stop speed threshold V in the traveling state based on the CNRs, respectively_pCalculating a moving speed threshold V in a stopped state_r. In addition, the storage unit 4 stores a program for this. For example, CNR ≧ 45dB is set as optimum V_p＝1.0km/h、V_rEvery 1dB decrease of CNR from 45dB at 6.5km/h stops the speed threshold V_pWill increase by 0.16km/h, the moving speed threshold value V_rIt will increase by 0.02 km/h. Table 2 shows the stop speed threshold V differentiated by CNR_pAnd a moving speed threshold V_rA part of (a). Alternatively, a table such as that shown in table 2 may be stored in the storage unit 4, and the control unit 1 may acquire the stop speed threshold V based on the CNR_pAnd a moving speed threshold V_r. As described above, since the influence of the error of the position information due to the signal quality is large when determining the transition to the stopped state, it is preferable to use the moving speed threshold V_rIn contrast, stop speed threshold V_pThe CNR-based variation amount is set larger. Wherein the stopping speed threshold value V_pSet not to exceed a moving speed threshold value V_r。

[ TABLE 2 ]

In the present embodiment, in the traveling state, as shown in fig. 5, the positioning unit 2 acquires the signal quality (CNR) together with the positional information (S13A), and the control unit 1 changes the stop speed threshold V based on the signal quality_p(S21) the moving speed V and the changed stopping speed threshold V are added_pComparison is performed (S22). In fig. 5, the control unit 1 is at the (W) th position_R+1) subsequent changes in the stopping speed threshold V_pHowever, it may be changed from the 1 st time. In addition, can be in the (W) th_R+1) times later, the positioning unit 2 acquires the signal quality together with the position information. Even when the user is in the stopped state, as shown in fig. 6, the positioning unit 2 acquires the signal quality (CNR) together with the position information (S13A), and the control unit 1 changes the moving speed threshold V_r(S31)。

(modification 1)

The signal from the positioning satellite ST is also affected by the difference in the display unit 6, and noise is generated particularly when driving a color liquid crystal display or a color organic EL display. For this reason, the speed threshold V can be changed based on whether the display unit 6 is displaying or not displaying a color image (displaying a monochrome image)_p、V_r. Specifically, the storage unit 4 stores in advance a table as exemplified in table 3. In the present modification, when the position information is acquired (S13A), the control unit 1 detects whether or not the color display 62 is displaying, instead of acquiring the signal quality. Then the speed threshold V is changed based on the detection result_p、V_r(S21, S31). Further, as shown in table 3, it is preferable that the display image is switched so that V is not set_p＞V_r。

[ TABLE 3 ]

(modification 2)

In the first placeIn embodiment 1 and embodiment 2 and modifications thereof, as described in embodiment 1, the configuration is such that: will stop speed threshold V_pAnd a moving speed threshold V_rThe difference is set to be larger than the variation range of the moving speed which continues for a long time when the user is traveling, and it is easy to continuously obtain V which is different in state determined by deceleration in the traveling state and acceleration in the stop state_p≤V＜V_rA moving speed V in the range of (1). However, it is also possible to make it difficult to continuously obtain V by setting the difference small in a range where the moving speed V is hardly affected by the measurement error of the positioning unit 2_p≤V＜V_rThe moving speed V in the range of (1). With such setting, the control unit 1 can easily uniquely determine the state of the acquired moving speed V. As will be described later, the setting can be made in a walking mode and a running mode.

For example, as shown as running mode in Table 4, CNR ≧ 45dB, set to V_p＝4.0km/h、V_rSet the speed threshold V for every 1dB decrease of CNR from 45dB at 5.0km/h_pThe speed threshold V is increased by 0.06km/h_rThe increase is 0.08 km/h. Table 4 compares with table 2, where CNR is 20dB, the stop speed threshold V_pIs pulled up from 5.0km/h to 5.5km/h, stops at a speed threshold V_pAnd a moving speed threshold V_rThe difference is reduced to 1.5 km/h. In the present modification, the stop speed threshold V is set_pAnd a moving speed threshold V_rThe difference is set to be small when the signal quality is good, and is set to be large as the CNR decreases, thereby suppressing the control unit 1 from erroneously determining a state transition due to a measurement error of the positioning unit 2. In addition, in the walking mode in which the influence of the measurement error of the positioning unit 2 is easily received and only the state where the user is actually stopped is determined as the stopped state, it is preferable that the stop speed threshold V be set to be higher than that in the running mode_pAnd a moving speed threshold V_rThe difference is set larger. In addition, it is desirable that the stop speed threshold V be set at the same signal quality_pWill not exceed the moving speed threshold V_rAnd further stop the velocity threshold V regardless of the signal quality_pWill not exceed the moving speed threshold V_r。

[ TABLE 4 ]

In the present modification, the stop speed threshold V is set as the signal quality becomes better_pAnd a moving speed threshold V_rThe smaller the difference is set. Thus, when the signal quality is low, it is difficult to make an erroneous determination of a state transition due to an increase in measurement error. At a stop speed threshold V_pAnd a moving speed threshold V_rWhen the difference is set small, although it is likely that the state transition is erroneously determined, the determination value T is appropriately set, for example_p、T_rThe control unit 1 can be inhibited from erroneously determining a state transition. The stop speed threshold V is set in accordance with the presence or absence of display of a color image on the display unit 6_pAnd a moving speed threshold V_rThe change of (2) can be set similarly. That is, the speed threshold V is stopped when a color image is displayed_pAnd a moving speed threshold V_rThe difference is set to be large. In addition, regarding the velocity threshold V_p、V_rIn embodiment 1, the stop speed threshold V can be set in the same manner_pAnd a moving speed threshold V_rThe difference is set small.

Control unit 1 controls stop speed threshold V_pAnd a moving speed threshold V_rIt is possible to implement only one, in particular the stopping speed threshold V in the travelling state_pOr (2) is changed. In addition, the control unit 1 may also set the speed threshold V_p、V_rThe alteration based on the signal quality and the alteration based on the display image are performed in combination.

According to embodiment 2 and its modification, the signal quality at the time of obtaining the position information for calculating the moving speed V is obtained at the same time, and the speed threshold V is changed as needed in accordance with the signal quality_p、V_rThus, in an environment with good signal quality, the state transition with high sensitivity is judged. On the other hand, in an environment where the signal quality is poor, the control section follows the acquired signal qualityThe speed threshold is changed temporally, suppressing erroneous determination of state transition.

[ 3 rd embodiment ]

In the case of a multipath environment, the accuracy of the position information is degraded. Therefore, it is possible to further improve the accuracy of the determination by determining whether or not the environment is a multipath environment, calculating the degree of the multipath environment, and changing the threshold value for determining the state transition in accordance with the calculated degree. The determination method according to embodiment 3 of the present invention will be described below with reference to fig. 1, 7, and 8. Fig. 7 and 8 are flowcharts illustrating steps of the control method according to embodiment 3 of the present invention, where fig. 7 is the control method in the moving state, and fig. 8 is the control method in the stopped state.

The stop determination method according to the present embodiment can be executed by the electronic device 10 shown in fig. 1, as in embodiments 1 and 2. In the present embodiment, the acquisition tracking unit 24 can determine whether or not the environment is a multipath environment based on the number of correlations, and can further determine the state of multipath. That is, the control unit 25 obtains a multipath pointer (MI), which is the number of multipaths, from the number of correlations calculated by the acquisition tracking unit 24. The control unit 1 calculates a stop determination value T in a traveling state based on MI_pIn a stopped state, a movement judgment value T is calculated_r. The storage unit 4 stores a program therefor. For example, as shown in table 5, MI is 0, which is the most favorable non-multipath environment, and T in table 1 in embodiment 1 is represented by_p＝10、T_rWith 5 as a reference, every time MI increases by 1, the stop determination value T is made_pIncrease 3 to make the movement determination value T_rIncrease by 1. In this way, in the same multipath environment, it is preferable to set the stop determination value T_pSpecific motion determination value T_rLarge, and further a stop determination value T used in determination of a transition from a traveling state to a stop state_pSetting the dependency to be a specific movement determination value T_rAnd is larger.

[ TABLE 5 ]

MI	T_p	T_r
			0	10	5
1	13	6
			2	16	7
3	19	8
			4	22	9

In the present embodiment, as shown in fig. 7 and 8, the positioning unit 2 acquires the position information and calculates MI (S13B). In the traveling state, when the moving speed V is less than the stop speed threshold V_p(yes in S22), the control unit 1 changes the stop determination value T in accordance with the MI calculated immediately before_p(S26), and then the judgment counter j and the changed stop judgment value T are compared_pComparison is performed (S29). In the stopped state, as shown in fig. 8, the control unit 1 changes the movement determination value T_r(S36). In fig. 7 and 8, the positioning unit 2 calculates MI from the 1 st position information, but may be at the (W) th position_R+1) times later (in the stopped state, the first(W_P+1) times). The determination value T may be changed regardless of the comparison result (S22, S32) of the moving speed V_p、T_r(S26, S36), for example, the controller 1 can change the stop determination value T when the writing movement speed V (S15)_p。

The control unit 1 may determine the stop determination value T_pAnd a movement determination value T_rExecuting only one of the stop determination values T, particularly in a travel-only state_pOr (2) is changed. In addition, the control unit 1 may change the speed threshold V in combination with embodiment 2 and the modification_p、V_rAnd a determination value T_p、T_rAnd two sides. Further, the following may be configured: the changed speed threshold value V when the signal quality is continuously good_p、V_rWhen the number of consecutive predetermined times is small, the control unit 1 determines the value T_p、T_rAnd (4) reducing.

According to embodiment 3, the positioning unit acquires the multipath situation when acquiring the position information, and the control unit changes the determination value T according to the multipath environment_p、T_rThus, the determination of a highly sensitive state transition is performed in a non-multipath environment. Conversely, in a multipath environment, by determining the value T_p、T_rChanging to a large value suppresses erroneous determination of state transition.

The present invention is not limited to the above embodiments.

Claims

1. An electronic device is characterized by comprising:

a speed acquisition unit for acquiring a moving speed of a user; and

a processor that determines whether the user is in a moving state or a stopped state,

the processor counts the number of times the moving speed acquired by the speed acquisition unit is less than a stop speed threshold in the moving state, determines that the moving state is transitioned to the stop state when the number of times the moving speed is less than the stop speed threshold reaches a stop determination value,

in the stopped state, the processor counts the number of times the moving speed acquired by the speed acquisition unit is equal to or greater than a moving speed threshold, and determines that the stopped state has transitioned to the moving state when the number of times the moving speed is equal to or greater than the moving speed threshold reaches a movement determination value,

the stop determination value is a value different from the movement determination value.

2. The electronic device of claim 1,

in the moving state, when the number of times that the moving speed acquired by the speed acquisition unit is equal to or greater than the stop speed threshold value reaches a stop reset value in succession, the processor determines that the moving state is transitioned to the stop state when the number of times that the moving speed acquired by the speed acquisition unit is less than the stop speed threshold value reaches the stop determination value in cumulative manner from then.

3. The electronic device of claim 1,

in the stopped state, when the number of times that the moving speed acquired by the speed acquisition unit is continuously less than the moving speed threshold reaches a movement reset value, and when the number of times that the moving speed acquired by the speed acquisition unit is equal to or greater than the moving speed threshold reaches the movement determination value in an accumulated manner from then on, the processor determines that the stopped state is transitioned to the moving state.

4. The electronic device of claim 1,

the speed acquisition unit acquires position information of a current location of the user from a positioning satellite received signal, calculates a moving speed based on a time change of the position information, and acquires signal quality,

the processor alters the stop speed threshold or the move speed threshold based on the signal quality.

5. The electronic device of claim 1,

the speed acquisition unit acquires position information of a current location of the user from a positioning satellite reception signal, calculates a moving speed based on a temporal change of the position information, and calculates a multipath environment index value,

the processor changes the stop determination value or the movement determination value based on the multipath environment index value.

6. The electronic device of claim 1,

the stop determination value is larger than the movement determination value.

7. The electronic device of claim 1,

the stop speed threshold is less than the move speed threshold.

8. The electronic device of claim 1,

the processor counts the number of times the moving speed acquired by the speed acquisition unit is less than a stop speed threshold after determining that the moving speed is acquired by the speed acquisition unit the number of times the stop determination standby value has been acquired by the speed acquisition unit after the processor determines that the moving state has been transitioned to.

9. The electronic device of claim 1,

the processor counts the number of times the moving speed acquired by the speed acquisition unit is less than a stop speed threshold after determining that the moving speed is acquired by the speed acquisition unit the number of times the movement determination standby value has been acquired from the transition to the stop state.

10. The electronic device of claim 1,

the electronic device is provided with a memory which is provided with a memory,

the processor writes the moving speed to 0 in the memory in the stopped state regardless of the moving speed acquired by the speed acquisition unit.

11. The electronic device of claim 1,

the electronic device is provided with: a display unit including a monochrome display for displaying a monochrome image and a color display for displaying a color image,

the processor alters the stop speed threshold or the movement speed threshold based on a display condition of the monochrome display or the color display.

12. The electronic device according to any one of claims 1 to 11,

the electronic device is equipped with the wrist of the user.

13. A stop determination method for an electronic device, the electronic device including:

a speed acquisition unit for acquiring a moving speed of a user; and

the stop determination method for an electronic device is characterized by executing the following steps:

a moving state speed acquisition step of acquiring a moving speed in the moving state;

a movement counting step of counting the number of times the movement speed acquired in the movement state speed acquisition step is less than the stop speed threshold;

a stop determination step of determining that the vehicle has transitioned to the stop state when the number of times counted in the movement counting step reaches the stop determination value;

a stopped state speed acquisition step of acquiring a moving speed in the stopped state;

a stop counting step of counting the number of times the moving speed acquired in the stopped state speed acquisition step is equal to or greater than the moving speed threshold; and

a movement determination step of determining that the state of movement is transitioned to when the number of times counted by the stop count step reaches the movement determination value,

14. A storage medium that causes a computer to execute the stop determination method according to claim 13.